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http://dx.doi.org/10.13104/jksmrm.2014.18.1.17

High-Resolution Contrast-Enhanced 3D-Spoiled Gradient-Recalled Imaging for Evaluation of Intracranial Vertebral Artery and Posterior Inferior Cerebellar Artery in Lateral Medullary Infarction  

Yoon, Youngno (Department of Radiology, Gangnam Severance Hospital, Yonsei University, College of Medicine)
Ahn, Sung Jun (Department of Radiology, Gangnam Severance Hospital, Yonsei University, College of Medicine)
Suh, Sang Hyun (Department of Radiology, Gangnam Severance Hospital, Yonsei University, College of Medicine)
Park, Ah Young (Department of Radiology, Gangnam Severance Hospital, Yonsei University, College of Medicine)
Chung, Tae-Sub (Department of Radiology, Gangnam Severance Hospital, Yonsei University, College of Medicine)
Publication Information
Investigative Magnetic Resonance Imaging / v.18, no.1, 2014 , pp. 17-24 More about this Journal
Abstract
Purpose : To determine whether high-resolution contrast-enhanced three dimensional imaging with spoiled gradient-recalled sequence (HR-CE 3D-SPGR) plays a meaningful role in the assessment of intracranial vertebral artery (ICVA) and posterior inferior cerebellar artery (PICA) in lateral medullary infarction (LMI). Materials and Methods: Twenty-five patients confirmed with LMI were retrospectively enrolled with approval by the IRB of our institute, and 3T MRI with HR-CE 3D-SPGR and contrast-enhanced magnetic resonance angiography (CE-MRA) were performed. Two radiologists who were blinded to clinical information and other brain MR images including diffusion weighted image independently evaluated arterial lesions in ICVA and PICA. The demographic characteristics, the area of LMI and cerebellar involvement were analyzed and compared between patients with arterial lesion in ICVA only and patients with arterial lesions in both ICVA and PICA on HR-CE 3D-SPGR. Results: Twenty-two of twenty-five LMI patients had arterial lesions in ICVA or PICA on HR-CE 3D SPGR. However twelve arterial lesions in PICA were not shown on CE-MRA. Concurrent cerebellar involvement appeared more in LMI patients with arterial lesion in ICVA and PICA than those with arterial lesion in ICVA alone (p = 0.069). Conclusion: HR-CE 3D-SPGR can help evaluate arterial lesions in ICVA and PICA for LMI patients.
Keywords
Lateral medullary infarction; Intracranial vertebral artery; Posterior inferior cerebellar artery; High-resolution contrast-enhanced magnetic resonance imaging; Diffusion-weighted magnetic resonance imaging;
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